The Nitecore I4 Battery Charger is a four bay charger that is capable of charging lithium-ion, IMR, NiMH or Ni-Cd batteries simultaneously. This charger identifies the type of battery being used in each slot and automatically assigns the proper charge mode for that battery. Each Nitecore charger is made from fire retardant materials and comes with a number of safety features that will prevent you from damaging your batteries or harming yourself in the process.